Analog Devices Inc. EVAL-AD7714-3EBZ

Overview

EVAL-AD7714-3EBZ from Analog Devices is a USB-powered evaluation board designed exclusively for the AD7714-3, a 24-bit low-power sigma-delta analog-to-digital converter with ±VREF/gain input range (gain = 1–128), simultaneous 50 Hz/60 Hz rejection at 10 Hz update rate, and configurable differential/pseudo-differential input channels. It enables rapid characterization of precision low-frequency measurement systems in sensor signal conditioning and industrial instrumentation.

For engineers reviewing the EVAL-AD7714-3EBZ datasheet, EVAL-AD7714-3EBZ pinout, EVAL-AD7714-3EBZ application, or EVAL-AD7714-3EBZ equivalent, this board delivers LabVIEW-based PC control, on-board ADP3303 3.3 V regulator, AD589 1.23 V reference, 2.4576 MHz crystal clock, SMB connectors for analog/reference/CLK signals, and 15 configurable jumpers for gain, polarity, buffer mode, power source, and temperature demo setup.

Technical Context

The EVAL-AD7714-3EBZ implements a complete hardware interface between a Windows PC and the AD7714-3 ADC via integrated USB-to-SPI bridge (U2), supporting register-level configuration and real-time data capture. It provides selectable analog input configurations - three fully differential or five pseudo-differential channels - with on-board ratiometric temperature demonstration circuit using a 1 kΩ thermistor and 5 kΩ precision resistor.

Power is flexibly sourced from USB 5 V (J1), external supply via J3, or regulated 3.3 V from ADP3303; link settings LK10–LK15 configure SCLK polarity, STANDBY mode, input buffering, clock source, and AVDD selection. Reset is implemented via push-button tied to the AD7714-3 RESET pin.

Key Specifications

Availability

EVAL-AD7714-3EBZ is available at Aetrix Electronics and suitable for precision sensor evaluation, industrial process monitoring, and laboratory-grade data acquisition requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for EVAL-AD7714-3EBZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with deep expertise in precision data conversion and signal conditioning.

The EVAL-AD7714-3EBZ belongs to Analog Devices' evaluation board product line, engineered to accelerate development of low-frequency, high-resolution measurement systems using the AD7714-3 ADC in applications demanding sub-10 ppm accuracy and noise-immune 50/60 Hz rejection.

FAQ

What is the primary function of the EVAL-AD7714-3EBZ?

The EVAL-AD7714-3EBZ is a dedicated evaluation platform for the AD7714-3 24-bit sigma-delta ADC. It provides USB connectivity, LabVIEW-based software, on-board power regulation (ADP3303), reference (AD589), clock (2.4576 MHz crystal), and configurable jumpers to validate performance, configure registers, and prototype sensor interfaces without custom hardware design. The EVAL-AD7714-3EBZ enables full functional testing of the AD7714-3 under real-world conditions including ratiometric temperature sensing and simultaneous 50/60 Hz rejection.

Does the EVAL-AD7714-3EBZ require an external power supply?

No - the EVAL-AD7714-3EBZ is fully powered via the USB connector (J1), delivering 5 V to the board and enabling operation of the AD7714-3, ADP3303 regulator, and USB/SPI interface. An external 3 V or 5 V supply may optionally be applied via J3, and link LK15 selects between USB-derived 5 V, regulated 3.3 V (ADP3303), or external input for AVDD. This flexibility ensures compatibility with both lab and field evaluation environments without additional power infrastructure.

How is analog input configured on the EVAL-AD7714-3EBZ?

Analog inputs are accessed via six SMB connectors: AIN1 and AIN2 for differential channel pairs, REFIN+ and REFIN− for external reference, and CLK for external clock injection. Jumpers LK1 and LK2 short AIN1/AIN2 for noise analysis; LK12 selects buffered/unbuffered input mode; and LK3–LK7 enable the onboard thermistor-based temperature demo. Input range is set by AD7714-3 gain (1–128) and reference voltage, with default configuration using the on-board AD589 1.23 V reference (LK8/LK9 installed).

What software is included with the EVAL-AD7714-3EBZ?

The EVAL-AD7714-3EBZ ships with a Windows-compatible CD containing LabVIEW-based evaluation software that communicates over USB to configure AD7714-3 registers, acquire conversion data, perform noise analysis, export to Excel/MathCAD, and run the temperature demonstration. Key features include Registers Window (mode/filter/gain control), Cal Registers (offset/full-scale calibration), Temp Demo (real-time °C readout), Waveform/Histogram/Codes visualization, and reference voltage entry. Software must be installed before connecting the EVAL-AD7714-3EBZ to avoid driver conflicts.

Can the EVAL-AD7714-3EBZ be used for production systems?

No - the EVAL-AD7714-3EBZ is strictly an evaluation and development tool licensed by Analog Devices for evaluation purposes only. Its design prioritizes flexibility and visibility (e.g., jumpers, SMB connectors, reset button) over ruggedness, size, or regulatory compliance required for production. For deployment, designers must implement the AD7714-3 in their own PCB layout using validated power, reference, clock, and layout practices per the AD7714 datasheet. The EVAL-AD7714-3EBZ serves solely to de-risk the AD7714-3 integration prior to custom hardware spin.